EFC

EFC
Tags: Acronym
EFC is a FAA Acronym for: Expect Further Clearance ...

EFC. See expect-further-clearance.
Electronic flight display (EFD). For the purpose of standardization, any flight instrument display that uses LCD or other image-producing system (Cathode Ray Tube [CRT], etc.) ...

If without EFC (expect further clearance), hold only until you have enough time left to fly the approach and touchdown at your ETA.
3. If the clearance limit you are holding at is a fix that is not one from which the approach begins (IAF):
a.